CN202901307U - Temperature and pressure reducing valve - Google Patents
Temperature and pressure reducing valve Download PDFInfo
- Publication number
- CN202901307U CN202901307U CN 201220604576 CN201220604576U CN202901307U CN 202901307 U CN202901307 U CN 202901307U CN 201220604576 CN201220604576 CN 201220604576 CN 201220604576 U CN201220604576 U CN 201220604576U CN 202901307 U CN202901307 U CN 202901307U
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- CN
- China
- Prior art keywords
- valve
- valve body
- temperature
- bonnet
- flap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a temperature and pressure reducing valve. The valve comprises a valve body; a lower valve deck assembly and a water feed flange are arranged below the valve body; an upper valve deck is arranged above the valve body; a valve rod and a valve clack are integrally connected; the upper part of the valve rod is connected with an execution mechanism through a half nut; an upper throat part and a lower throat part of the valve body are provided with an upper valve seat and a lower valve seat; the valve clack penetrates through the upper valve seat and the lower valve seat; and an upper valve deck screen and a lower valve deck screen are arranged in upper and lower cavities of the valve body. The temperature and pressure reducing valve has the advantages that the temperature and pressure reducing valve is reasonable in design, good in using performance, low in production cost, has the functions of reducing pressure and temperature of steam, and meets the requirement of technological parameters of steam.
Description
Technical field
The utility model relates to a kind of reducing-and-cooling plant, especially a kind of steam converter valve.
Background technique
Reducing-and-cooling plant, be widely used in the industrial fields such as power station, light textile, petrochemical industry, food and drink processing and papermaking, the secondary steam that defeated next fresh steam is converted into the temperature and pressure that is fit to demand of industrial production is located in power station or industrial boiler and thermoelectricity plant etc., namely carried out pressure and temperature reducing and process.The aspects such as traditional steam converter valve is large to leakage rate, changes in flow rate scope, desuperheat and decompression changes in amplitude are large are difficult to control, and required actuator thrust is large, is difficult to satisfy the variable working condition needs, directly affects the adjusting function of valve.
Summary of the invention
The utility model will solve the shortcoming of above-mentioned prior art, provides a kind of and all is significantly improved and perfect steam converter valve from aspects such as structural design, debug performance, reduction noise, saving costs.
The utility model solves the technological scheme that its technical problem adopts: this steam converter valve, comprise valve body, the valve body below is provided with bottom flange assembly and feedwater flange, the valve body top is provided with bonnet, valve rod and flap are integrated connection, and valve rod top is connected by clip nut with actuator, and the up and down throat of valve body is respectively equipped with upper valve base and lower valve base, flap is respectively equipped with bonnet guard and bottom flange guard through upper valve base and lower valve base in the upper and lower cavity of valve body.
As preferably, described valve body adopts two plat spheroiies.
As preferably, described bonnet is provided with heat radiation rack, and actuator is located at the heat radiation rack top.
As preferably, the sealing surface weld deposit stellite high hardness cemented carbide of described flap and upper valve base and lower valve base.
As preferably, be provided with stem packing between described valve rod and the bonnet.
The effect that the utility model is useful is: the utility model is reasonable in design, and usability is good, and cost of production is low, has function and efficacies such as steam pressure-reducing, desuperheats, satisfies the needs of user's steam process parameter.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Description of reference numerals: actuator 1, heat radiation rack 2, bonnet 3, stem packing 4, valve rod 5, bonnet guard 6, upper valve base 7, valve body 8, lower valve base 9, flap 10, bottom flange guard 11, bottom flange assembly 12, feedwater flange 13.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Embodiment: such as Fig. 1, this steam converter valve, feedwater flange 13, bottom flange assembly 12 be loaded on the lower end of valve body 8 with bottom flange guard 11, upper valve base 7 and lower valve base 9 are welded in the up and down throat of valve body 8, bonnet guard 6 is installed and valve body 8 tops with bonnet 3.Flap 10 is fixedly connected into integral body with valve rod 5, and valve rod 5 upper ends and actuator 1 link to each other by clip nut.Actuator 1 is loaded on the heat radiation rack 2 on the bonnet 3.Valve rod 5 moves up and down, and drives flap 10 and moves up and down, and can change the circulation area that valve seat and flap 10 form, and reaches the circulation area of regulating valve seat and flap 10, realizes the purpose that reduces pressure.The cooling water that feedwater flange 13 is entered is sprayed into the purpose that makes the direct mixing of water and steam escutcheon atomizing cavity in valve realize desuperheat in the valve pocket by the flap nozzle.
The integral structure that this employing pressure and temperature reducing is finished in same valve can reduce the structure length of whole reducing-and-cooling plant.Valve body 8 adopts two plat spheroiies, is beneficial to fluid the flowing of inside, and can reduce alternating stress, and voltage endurance capability is strong; The guard that valve body 8 upper and lower chambeies are provided with, especially as an atomizing cavity, not only strengthened cooling water atomizing effect, reduce noise, but also avoid valve interior wall directly to be subjected to spary, protection valve seat and body cavity, prolong valve working life, also reduced the noise of valve simultaneously, noise≤85dBA; Adopt the two-seater equilibrium structure, both can reduce the unbalanced force of flap 10, can realize reliable sealing again, reduced valve, 5 steering force has improved the stability of valve simultaneously; Flap 10, valve base sealing surface build-up welding stellite is high temperature resistant, resistance to erosion and corrosion resistant high hardness cemented carbide, has reduced leak-down rate, has prolonged valve working life; Flap 10 is designed to various Flow characteristics structures, satisfies the requirement of the different operating modes of Flow characteristicss such as linear LN, equal percentage EP% and parabola.
In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (5)
1. steam converter valve, comprise valve body (8), valve body (8) below is provided with bottom flange assembly (12) and feedwater flange (13), valve body (8) top is provided with bonnet (3), valve rod (5) and flap (10) are integrated connection, valve rod (5) top is connected by clip nut with actuator (1), it is characterized in that: the up and down throat of valve body (8) is respectively equipped with upper valve base (7) and lower valve base (9), flap (10) is respectively equipped with bonnet guard (6) and bottom flange guard (11) through upper valve base (7) and lower valve base (9) in the upper and lower cavity of valve body (8).
2. steam converter valve according to claim 1 is characterized in that: the two plat spheroiies of described valve body (8) employing.
3. steam converter valve according to claim 1, it is characterized in that: described bonnet (3) is provided with heat radiation rack (2), and actuator (1) is located at heat radiation rack (2) top.
4. steam converter valve according to claim 1 is characterized in that: the sealing surface weld deposit stellite high hardness cemented carbide of described flap (10) and upper valve base (7) and lower valve base (9).
5. steam converter valve according to claim 1 is characterized in that: be provided with stem packing (4) between described valve rod (5) and the bonnet (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604576 CN202901307U (en) | 2012-11-14 | 2012-11-14 | Temperature and pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604576 CN202901307U (en) | 2012-11-14 | 2012-11-14 | Temperature and pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202901307U true CN202901307U (en) | 2013-04-24 |
Family
ID=48121978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220604576 Expired - Lifetime CN202901307U (en) | 2012-11-14 | 2012-11-14 | Temperature and pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202901307U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103791104A (en) * | 2014-02-18 | 2014-05-14 | 张周卫 | LNG stop valve |
| CN104806814A (en) * | 2014-01-27 | 2015-07-29 | 上海华林工业气体有限公司 | High-temperature pipeline valve component for steam methane converter |
| CN107725788A (en) * | 2017-11-22 | 2018-02-23 | 上海核阀门股份有限公司 | Two-seater voltage-stablizer spray valve |
-
2012
- 2012-11-14 CN CN 201220604576 patent/CN202901307U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806814A (en) * | 2014-01-27 | 2015-07-29 | 上海华林工业气体有限公司 | High-temperature pipeline valve component for steam methane converter |
| CN103791104A (en) * | 2014-02-18 | 2014-05-14 | 张周卫 | LNG stop valve |
| CN107725788A (en) * | 2017-11-22 | 2018-02-23 | 上海核阀门股份有限公司 | Two-seater voltage-stablizer spray valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |